diff options
Diffstat (limited to 'src/gallium/drivers/r300/r300_render_translate.c')
| -rw-r--r-- | src/gallium/drivers/r300/r300_render_translate.c | 322 |
1 files changed, 322 insertions, 0 deletions
diff --git a/src/gallium/drivers/r300/r300_render_translate.c b/src/gallium/drivers/r300/r300_render_translate.c new file mode 100644 index 0000000000..0ea11e5bfc --- /dev/null +++ b/src/gallium/drivers/r300/r300_render_translate.c @@ -0,0 +1,322 @@ +/* + * Copyright 2010 Marek Olšák <maraeo@gmail.com> + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * on the rights to use, copy, modify, merge, publish, distribute, sub + * license, and/or sell copies of the Software, and to permit persons to whom + * the Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE + * USE OR OTHER DEALINGS IN THE SOFTWARE. */ + +/** + * The functions below translate vertex and index buffers to the layout + * compatible with the hardware, so that all vertex and index fetches are + * DWORD-aligned and all used vertex and index formats are supported. + * For indices, an optional index offset is added to each index. + */ + +#include "r300_context.h" +#include "translate/translate.h" + +void r300_begin_vertex_translate(struct r300_context *r300) +{ + struct pipe_context *pipe = &r300->context; + struct translate_key key = {0}; + struct translate_element *te; + unsigned tr_elem_index[PIPE_MAX_ATTRIBS] = {0}; + struct translate *tr; + struct r300_vertex_element_state *ve = r300->velems; + boolean vb_translated[PIPE_MAX_ATTRIBS] = {0}; + void *vb_map[PIPE_MAX_ATTRIBS] = {0}, *out_map; + struct pipe_transfer *vb_transfer[PIPE_MAX_ATTRIBS] = {0}, *out_transfer; + struct pipe_resource *out_buffer; + unsigned i, num_verts; + + /* Initialize the translate key, i.e. the recipe how vertices should be + * translated. */ + for (i = 0; i < ve->count; i++) { + struct pipe_vertex_buffer *vb = + &r300->vertex_buffer[ve->velem[i].vertex_buffer_index]; + enum pipe_format output_format = ve->hw_format[i]; + unsigned output_format_size = ve->hw_format_size[i]; + + /* Check for support. */ + if (ve->velem[i].src_format == ve->hw_format[i] && + (vb->buffer_offset + ve->velem[i].src_offset) % 4 == 0 && + vb->stride % 4 == 0) { + continue; + } + + /* Workaround for translate: output floats instead of halfs. */ + switch (output_format) { + case PIPE_FORMAT_R16_FLOAT: + output_format = PIPE_FORMAT_R32_FLOAT; + output_format_size = 4; + break; + case PIPE_FORMAT_R16G16_FLOAT: + output_format = PIPE_FORMAT_R32G32_FLOAT; + output_format_size = 8; + break; + case PIPE_FORMAT_R16G16B16_FLOAT: + output_format = PIPE_FORMAT_R32G32B32_FLOAT; + output_format_size = 12; + break; + case PIPE_FORMAT_R16G16B16A16_FLOAT: + output_format = PIPE_FORMAT_R32G32B32A32_FLOAT; + output_format_size = 16; + break; + default:; + } + + /* Add this vertex element. */ + te = &key.element[key.nr_elements]; + /*te->type; + te->instance_divisor;*/ + te->input_buffer = ve->velem[i].vertex_buffer_index; + te->input_format = ve->velem[i].src_format; + te->input_offset = vb->buffer_offset + ve->velem[i].src_offset; + te->output_format = output_format; + te->output_offset = key.output_stride; + + key.output_stride += output_format_size; + vb_translated[ve->velem[i].vertex_buffer_index] = TRUE; + tr_elem_index[i] = key.nr_elements; + key.nr_elements++; + } + + /* Get a translate object. */ + tr = translate_cache_find(r300->tran.translate_cache, &key); + + /* Map buffers we want to translate. */ + for (i = 0; i < r300->vertex_buffer_count; i++) { + if (vb_translated[i]) { + struct pipe_vertex_buffer *vb = &r300->vertex_buffer[i]; + + vb_map[i] = pipe_buffer_map(pipe, vb->buffer, + PIPE_TRANSFER_READ, &vb_transfer[i]); + + tr->set_buffer(tr, i, vb_map[i], vb->stride, vb->max_index); + } + } + + /* Create and map the output buffer. */ + num_verts = r300->vertex_buffer_max_index + 1; + + out_buffer = pipe_buffer_create(&r300->screen->screen, + PIPE_BIND_VERTEX_BUFFER, + key.output_stride * num_verts); + + out_map = pipe_buffer_map(pipe, out_buffer, PIPE_TRANSFER_WRITE, + &out_transfer); + + /* Translate. */ + tr->run(tr, 0, num_verts, 0, out_map); + + /* Unmap all buffers. */ + for (i = 0; i < r300->vertex_buffer_count; i++) { + if (vb_translated[i]) { + pipe_buffer_unmap(pipe, r300->vertex_buffer[i].buffer, + vb_transfer[i]); + } + } + + pipe_buffer_unmap(pipe, out_buffer, out_transfer); + + /* Setup the new vertex buffer in the first free slot. */ + for (i = 0; i < PIPE_MAX_ATTRIBS; i++) { + struct pipe_vertex_buffer *vb = &r300->vertex_buffer[i]; + + if (!vb->buffer) { + pipe_resource_reference(&vb->buffer, out_buffer); + vb->buffer_offset = 0; + vb->max_index = num_verts - 1; + vb->stride = key.output_stride; + r300->tran.vb_slot = i; + break; + } + } + + /* Save and replace vertex elements. */ + { + struct pipe_vertex_element new_velems[PIPE_MAX_ATTRIBS]; + + r300->tran.saved_velems = r300->velems; + + for (i = 0; i < ve->count; i++) { + if (vb_translated[ve->velem[i].vertex_buffer_index]) { + te = &key.element[tr_elem_index[i]]; + new_velems[i].instance_divisor = ve->velem[i].instance_divisor; + new_velems[i].src_format = te->output_format; + new_velems[i].src_offset = te->output_offset; + new_velems[i].vertex_buffer_index = r300->tran.vb_slot; + } else { + memcpy(&new_velems[i], &ve->velem[i], + sizeof(struct pipe_vertex_element)); + } + } + + r300->tran.new_velems = + pipe->create_vertex_elements_state(pipe, ve->count, new_velems); + pipe->bind_vertex_elements_state(pipe, r300->tran.new_velems); + } + + pipe_resource_reference(&out_buffer, NULL); +} + +void r300_end_vertex_translate(struct r300_context *r300) +{ + struct pipe_context *pipe = &r300->context; + + /* Restore vertex elements. */ + pipe->bind_vertex_elements_state(pipe, r300->tran.saved_velems); + pipe->delete_vertex_elements_state(pipe, r300->tran.new_velems); + + /* Delete the now-unused VBO. */ + pipe_resource_reference(&r300->vertex_buffer[r300->tran.vb_slot].buffer, + NULL); +} + +static void r300_shorten_ubyte_elts(struct r300_context* r300, + struct pipe_resource** elts, + int index_bias, + unsigned start, + unsigned count) +{ + struct pipe_context* context = &r300->context; + struct pipe_screen* screen = r300->context.screen; + struct pipe_resource* new_elts; + unsigned char *in_map; + unsigned short *out_map; + struct pipe_transfer *src_transfer, *dst_transfer; + unsigned i; + + new_elts = pipe_buffer_create(screen, + PIPE_BIND_INDEX_BUFFER, + 2 * count); + + in_map = pipe_buffer_map(context, *elts, PIPE_TRANSFER_READ, &src_transfer); + out_map = pipe_buffer_map(context, new_elts, PIPE_TRANSFER_WRITE, &dst_transfer); + + in_map += start; + + for (i = 0; i < count; i++) { + *out_map = (unsigned short)(*in_map + index_bias); + in_map++; + out_map++; + } + + pipe_buffer_unmap(context, *elts, src_transfer); + pipe_buffer_unmap(context, new_elts, dst_transfer); + + *elts = new_elts; +} + +static void r300_rebuild_ushort_elts(struct r300_context *r300, + struct pipe_resource **elts, + int index_bias, + unsigned start, unsigned count) +{ + struct pipe_context *context = &r300->context; + struct pipe_transfer *in_transfer = NULL; + struct pipe_transfer *out_transfer = NULL; + struct pipe_resource *new_elts; + unsigned short *in_map; + unsigned short *out_map; + unsigned i; + + new_elts = pipe_buffer_create(context->screen, + PIPE_BIND_INDEX_BUFFER, + 2 * count); + + in_map = pipe_buffer_map(context, *elts, + PIPE_TRANSFER_READ, &in_transfer); + out_map = pipe_buffer_map(context, new_elts, + PIPE_TRANSFER_WRITE, &out_transfer); + + in_map += start; + for (i = 0; i < count; i++) { + *out_map = (unsigned short)(*in_map + index_bias); + in_map++; + out_map++; + } + + pipe_buffer_unmap(context, *elts, in_transfer); + pipe_buffer_unmap(context, new_elts, out_transfer); + + *elts = new_elts; +} + +static void r300_rebuild_uint_elts(struct r300_context *r300, + struct pipe_resource **elts, + int index_bias, + unsigned start, unsigned count) +{ + struct pipe_context *context = &r300->context; + struct pipe_transfer *in_transfer = NULL; + struct pipe_transfer *out_transfer = NULL; + struct pipe_resource *new_elts; + unsigned int *in_map; + unsigned int *out_map; + unsigned i; + + new_elts = pipe_buffer_create(context->screen, + PIPE_BIND_INDEX_BUFFER, + 2 * count); + + in_map = pipe_buffer_map(context, *elts, + PIPE_TRANSFER_READ, &in_transfer); + out_map = pipe_buffer_map(context, new_elts, + PIPE_TRANSFER_WRITE, &out_transfer); + + in_map += start; + for (i = 0; i < count; i++) { + *out_map = (unsigned int)(*in_map + index_bias); + in_map++; + out_map++; + } + + pipe_buffer_unmap(context, *elts, in_transfer); + pipe_buffer_unmap(context, new_elts, out_transfer); + + *elts = new_elts; +} + +void r300_translate_index_buffer(struct r300_context *r300, + struct pipe_resource **index_buffer, + unsigned *index_size, unsigned index_offset, + unsigned *start, unsigned count) +{ + switch (*index_size) { + case 1: + r300_shorten_ubyte_elts(r300, index_buffer, index_offset, *start, count); + *index_size = 2; + *start = 0; + break; + + case 2: + if (*start % 2 != 0 || index_offset) { + r300_rebuild_ushort_elts(r300, index_buffer, index_offset, *start, count); + *start = 0; + } + break; + + case 4: + if (index_offset) { + r300_rebuild_uint_elts(r300, index_buffer, index_offset, *start, count); + *start = 0; + } + break; + } +} |